they were used to calculate difficult sums faster.
Annuity calculators are used to calculate the returns on investments made in annuities.
Calculators are used to calculate, or solve math problems to come up with solutions.Hope that helped!
scientific calculators
The answer depends on how you define calculator. The first calculators were people. Blaise Pascal built a kind of calculator in the 17 century. It was powered by a human turning a knob or pulling a crank. The first widely used desk calculators were powered by electricity.
GPA calculators are used for College students to keep track of their Grade Point Average.
Naegele's Rule is a mathematical formula often used in pregnancy due date calculators. This is a formula that adds 7 days to the first LMP and then subtracting three months from that figure.
Yes, magnets are commonly used in calculators to help hold batteries in place or to secure the calculator cover. Magnets can also be used in certain types of stylus pens for touchscreen calculators.
well it is used for calculating numbers and would be useful but usually calculators are not used during exams as it is a basic rule for not using them !
I recommend http://banking.about.com/library/calculators/bl_LoanAmortizationCalculator.htm as an excellent website for amortization calculators that can be used in Microsoft excel
There are calculators with sound and volume adjustment. These calculators are used by medical doctors and scientists. They are not available for the general public to purchase.
Silicon based semiconductors are the most commonly used semiconductor material in calculators. Silicon semiconductors are also extensively used in computers.